- 757 - SECTION 918 -- ABANDONING MANHOLES, INLETS, AND JUNCTION BOXES
918.01 Description
1.This work consists of demolishing manholes, inlets, and junction boxes and backfilling the area as described in the contract.
918.02 Material Requirements
1.Granular material in this Section is defined as material having 90% or more retained on the No. 200 (75 µm) sieve.
2.The backfill materials shall be compacted to the stiffness requirements for Class III embankment as described in S ubsection 205.03, Paragraph 14.b.(3).
918.03 Construction Methods
1.The Contractor shall remove the manhole cover and the top cast iron flange.
2.The Contractor shall demolish the manhole, inlet, or junction box walls to at least 40 inches (1 m) below the finished grade elevation.
3.The Contractor shall plug all opening with concrete pipe plugs. 4. The Contractor shall demolish th e floor of the structure. No piece shall be longer than 40 inches (1 m) in any dimension.
5.a. The Contractor shall fill the opening created by the demolition with granular material to within 40 inches (1 m) of the finished grade elevation.
b.The Contractor shall fill the remaining hole with soil and compact to the same stiff ness as surrounding soils.
6.Materials which are removed and not salvaged shall be disposed of in accordance with requirements in Section 203.
918.04 Method of Measurement
1."Abandon Manhole", "Abandon Inlet", and "Abandon Junction Box" are measured by the each.
918.05 Basis of Payment
1.P a y I t e m P a y U n i t Abandon Manhole Each (ea) Abandon Inlet Each (ea) Abandon Junction Box Each (ea)
2.Payment is full compensation for all work described in this Section. - 758 - SECTION 919 -- EQUIPMENT RENTAL
919.01 Description
1.The Contractor shall furnish, maintain, provide fuel, and operate equipment when the contract requires work on an "equipment rental" basis.
919.02 Equipment Requirements
1.Motorgraders shall be the self-propelled type, either tandem or all- wheel drive, equipped with pneumatic tires. They shall be equipped with a moldboard at least 12 feet (3.65 m) long with a suitable cutting edge, a scarifier with 9 or more teeth having minimum dimensions of 3 inches x 1 inch x 16 inches (75 mm x 25 mm x 400 mm), and power-operated controls. They shall be propelled by engines having a manufacturer's rating of at least 115 brake horsepower (85,755 brake watts).
2.Multiple-wheel, pneumatic-tired rollers shall be constructed so that they can be loaded to a gross weight of 200 pounds/inch (3.6 Kg/mm) of tire width. The internal pressure in the tires shall be at least 25 psi (172 kPa), and the tires on the front and rear axles shall be staggered so that they will cover the entire area over wh ich the roller travels.
3.Tamping or sheepsfoot rollers shall consist of a cylindrical metal roller, drum, or shell studded with tamping feet projecting not less than 7 inches (175 mm) from the su rface of the roller, drum, or shell. The tamping feet shall be spaced not less than 6 inch es (150 mm) or more than 10 inches (250 mm) measured diagonally center to center in any direction, and the face area of each shall be not less than 4 square inches (2,580 mm2) nor more than 12 square inches (7,740 mm2).
4.Wheel tractors shall be a farm or industrial type tractor equipped with pneumatic tires and capable of pulling the rollers and trailer type rotary tillers described herein. The tractors shall be propelled by engines having a manufacturer's rating of at least 46 belt horsepower (34,300 belt watts).
5.Crawler tractors and scrapers shall be crawler-type tractors and scrapers that are designed to operate as a unit. The crawler tractors shall be propelled by engines having a manufactur er's rating of at least 100 drawbar horsepower (74,570 drawbar watts). The scrapers shall be equipped with pneumatic tires and shall have a mi nimum struck capacity of 13.5 cubic yards (10.3 m3).
6.Tractors and scrapers shall be pneumatic-tired tractors and pneumatic-tired scrapers that are design ed to operate as a unit. The tractors shall be propelled with engines having a manufacturer's rating of at least 101 brake horsepower (75,300 drawbar watts). The scrapers shall have a minimum struck capacity of 6.5 (5 m3) cubic yards (10.3 m3).
7.Loading equipment shall be a uni t or units capable of excavating soil in its original position and loading the excavated material into dump trucks. The equipment shall be of such size and capacity that it can excavate and load at least 52 cubic yards (40 m3) of soil each hour.
8.Draglines shall be the full-revolving type with booms not less than 32 feet (9.8 m) long, a manufacturer's rated capacity of at least 3/4 cubic yard (0.6 m3), and a Power Crane Shovel Association rating of at least 15 tons (13.6 Mg). The bucket shall in no case be larger or smaller than that for which the machine is designed.
Source: Nebraska Standard Specifications for Highway Construction, 2017 Edition. Pages 791–791 of 1,048.